Paper-tube-making machine



1,625,470 Aprll 19,1927. R. J. JAUCH PAPER TUBE MAKING MACHINE Fild July 6, 1925 4 Sheets-Sheet 1 my w W WW INVENTOR.

- ATTORNEY.

R. J; JAUCH PAPER THEE MAKING MACHINE April 19, 1927.

Filed July 6, 1925.

4 Sheet-Sheet- 2 INVENTOR.

ATTORNEY.

Aplfll 7 R. J. JAUCH- PAPER TUBE MAKING MACHINE File uly 6. 1925 4 Sheets-Sheet a 3 //F////////v/ K 1 E u .3 4 a I N VEN TOR.

7/! If VII/ll ATTORNEY.

1927. Apnl R. J. JAUCH PAlER TUBE MAKING MACHINE Filed Jul e, 1925 4 sheets-sheet" 4 5 INVENTOR.

ATTORNEY.

Patented Apr. 19, 192 7.

PATENT OFFICE.

ROBERT J. J'AUCH, OF FORT WAYNE, INDIANA.

rAPER-TuBE-Miimuo MACHINE.

Application filed July 6, 1925' Serial No. 41,561.

This invention relates to improvements in paper tube making machines, especially for the manufcature of that type of tubes composed of a plurality of strips of paper disposed in spiral formation and wound in successive 'order, one upon the other, over lapping and covering the abutting portions of the next underlying layer. The object of theinvention is to provide a machine for accurately winding paper strips to form a tube thereof that will be of great strength,

and the joints between the strips will be' close fitting. Another object of the improvement is to so construct the machine as F to facilitate manufacture of paper tubes of indefinite length and polygonal in cross section as well as round.

These objects are accomplished by the construction illustrated in the accompanying drawings, in which .Fig. 1 is a side elevation of a machine embodying the invention;

Fig. 2 is a plan view projected from Fig.

I I n a Fig. 3 1s a detail plan view showing a square mandrel upon which three strips of paper are being wound to form a tube;

Fig.4 is a side view of the rotary driver, portions thereof being in section;

Fig. 5 is an end view projected from Fig. u Fig. .6, a detail, is aview of the driving clutch'and the disengaging member therefor, parts of said clutch being broken away and the remainder shown in vertical axial section.

Fig. 7 is a plan view of the disengaging member shown in Fig. 6;

Fig. 8 is a detail View of a coupling by which the reciprocating member and the rotating connecting rod are united, parts bein in section; I

ig. 9 is a detail view of the bearing support for the mandrel, parts being broken away and the remainder of these parts in section; 1

Fig. 'is an end view projected from Fig. 9;

Fig. 11 is a side view of the gripping device for preventing retraction of the paper tube on the mandrel;

Fig. 12 is an end view projected from Fig. 11; and I Fig. 13 is a cross section of Fig. 12 upon 5 a reduced scale.

Thecharacters appearing in the description refer to parts shown in the drawings and designated thereon by corresponding characters.

The invention comprises a table 1 to which are secured the various partsof the machine.

Upon the table are disposed a pair of fixed bearings 2 in which is rotatably mounted a drive-shaft 3 that is actuated by a motor 21 through the medium of a'belt 5 and pul- A reciprocatingdriver is mounted on the table so as to be actuated by the drive-shaft 3 and consists of a counter-shaft 7 having thereon a worm-wheel 8 that is actuated by a worm 9 on the drive-shaft. The countershaft has fixed thereon a mutilated gear 10 that has engagement alternately with a pair of spaced rack-bars 11 and 12. The countershaft- 7 and the rack-bars 11 and 12 have bearing support respectively in a standard 13 on the table, and the forward "ends of said rack-bars have rigidl fixed thereto a cross-head 14 which has a orWardly extending rigid stem 15.

A rotary driver is mounted upon the table,

and consists of a sprocket wheel 16 mounted in a standard 17, and through the hub of which a square connecting rod 18 extends and has longitudinal sliding movement. The square connecting rod 18 is disposed in longitudinal alinement with the stem 15 on the reciprocating driver and is connected to said stem by a coupling 19 having therein a bearing 20 that admits of rotation of the. connecting rod 18 relative to the stem.

The rotary driver is actuated by a chain 21 on the sprocket Wheel 16 and which is connected with a variable speed motion transmitting mechanism 22 that is mounted inthe base 23 of the table, said mechanism being actuated from the drive'shaft 3 by a chain 24. The said motion transmitting mechanism may be of any suitable type bywhich power may be transmitted from the IOU 32 therefor by which the belt may be moved on the cones longitudinally to various positions. The chain 24' has actuating relation having therein a vertically movable plunger with the shaft 29 and the shaft .28 has ac tuating relation with the chain 21, and

movement 1s imparted through thenledium' tive to the movement of the reciprocating driver.

A unitary, square mandrel 33 pinned to shank 36 (see Fig. 9) is mounted in a bearing 3st in which the mandrel has longitudinal and rotary movement, there being loose sleeves 35 in the bearing in which the mandrcl slides longitudinally while the sleeves rotate in the bearing. The shank 36 of the mandrel is round in cross section and extends loosely through a supporting bearing 37 in which it has longitudinal and rotary movement. The connecting rod 18 and the shank 36 of the mandrel have corresponding clutch members 38 and 39 respectively fixed thereon so as to abut one another, the abutting faces of said members being toothed so that looking engagement between the clutch members is established when the clutch members are brought together. The clutch members are coupled together by a screw 40 which is disposed in axial aline ment with the connecting rod 18 and mandrel shank 36, and is fixed in the clutch member 39 while its head 4-1 is rotatable and has limited longitudinal movement in the clutch member 38, which longitudinal movement is suliicient to admit of disengagement of said clutch members. The clutch member 39 has a tapered portion 4-2 that fits into the. rear end of the bearing 37 when the mandrel is in its torwardmest position, the rear end of the bearing being correspondingly tapered.

Adjacent the rear end of the bearing 37 is positioned a disengaging member for the clutch, which comprises a hollow post 43 44, there being a longitudinal slot .45 in the plunger, and a screw L6 in the post that extends into the slot so that the plunger is prevented from turning. On the top of the plunger is a projecting wedge 16' that enters between the clutch members 38 and 39 and effects the separation thereof as the mandrel completes its forward stroke, there being a compression spring 4L7 in the post acting to move the plunger upwardly.

On the forward end of the table ispositioned a gripping member consisting of a frame 48 in which are positioned a series of radially disposed movable jaws 19, each havinq a slanting outer end 50 and a rubber plug 01 in its inner end. The frame has an o enlng 52 around which the aws are posltioned and through wlnch the mandrel neaaare 33 extends loosely. The said jaws moye radially in the frame and have bearing ongagement respectively with the mandrel when in their innermost position, and are held normally out of contact with the mandrel respectively by corresponding springs 53. Surrounding the series of jaws 49 on the frame is an oscillating sleeve 5 L having a series of internal wedges 55, which wedges have engagement respectively with the cor responding jaws and act to move the jaws inwardly into engagement with the mandrel when the sleeve is actuated in one direction, the, sleeve havir an arm 56 lixed thereon for its operation. A tension spring 57 is coupled with the arm at at one end, and is wnnected at its opposite end with av bracl-zet so that the arm is held normally in uppermost position and the jaws conse- (uently out of engagement with the inandrel.

An electric solenoid 59 is fixed on the side oi? the table, and its plunger 60 is coupled with the arm :36 by a connecting rod 61 so that as the solenoid is operated the arm 56 is swing downwardly opposed by the tension of the spring, and the jaws are moved into contact with the mandrel as the sleeve 5 1. is turned by the action of the arm.

()n the table 1, at the forward side thereof, adjacent the mandrel" and back of the gripping member is pivoted a horizontally movable arm 62 having mounted thereon a reel 63 and guide 64 that constitutes a feeding device for a strip 65 of paper-which forms the underlying stratum or base of the composite paper tube to be formed on the mandrel, the arm being adjustably movable on its pivot so that the strip o'l paper will be fed to the mandrel at an angle varying in degree accordingly. Upon the table in a position opposite to that of said feeding device is pivoted a horizontally movable platform (36 that has in connection therewith a pair of guides 67 and G8 and also a glue applicator (39 including a pair of reels T0 and T1, the applicator and said pair of guides constituting a feeder for supplying strips of adhesive paper 72 and 73 to the mandrel. The adhesive strips 72 and 73 form respectively the intermediate and outermost strata of said composite tube, and the platform 66 is adjustably movable upon its pivot so that the adhesive strips may be fed to theanandrel at an angle varying in degree accordingly.

The feeding devices and the applicator may be of any suitable construction adaptable to the purpose, their particular construction being immaterial to the present invention.

The solenoid 59 is connected in circuit with a suitable source of electrical energy (not shown) and a switch 74, the switch being positioned so as to be closed at the llll) backward stroke, there being fingers 75 and that the rotary movement of the-mandrel during the forward or winding stroke there:

7 6 spaced apart and fixed in connection with the reciprocating driver and extending in line with the switch so as to have operative relation therewith.

In the operation of the invention the reciprocatin'g driver and the variable speed motion'transmitting mechanism are continuously operated through action of the motor, and the rotary driver is continuously operated through its chain connection with said transmitting mechanism and at a rate of speed governed by the belt shifter. In this manner reciprocating as well as rotary movement is imparted to the connecting rod 18. During the forward stroke of theconnecting rod the clutch member 38 bears against and has locking engagement with the clutch member 39 so that the mandrel 33 is moved forwardly and simultaneously.

I time the clutch members become parted by the engagement of the wedge on the gripping member, which enters therebetwecn. The wedge also has the effect of pressing the clutch member 39 forwardly so that its tapering body bears with more-or less force in the end of the supporting bearing 37 which has the effect of arresting the rotary movement of the mandrel to which the clutch member 39 is fixed. At the end of the forward stroke of the reciprocating member, the finger 7 5 engages and closes the electrical switch 74 so that the solenoid is actuated. The gripping member is also actuated through its connection with the solenoid so that the jaws thereof are moved into bearing engagement with the mandrel 33.

Upon the return stroke or backward stroke of the connecting rod, themandrel is drawn rearwardly while being held by the gripping member from rotation, the clutch members bein drawn out of engagement from the clutli actuating member and out of locking engagement with each other by the retracting movement of the connecting rod.

Thepaper strip 'is coiled upon the reel 63 with one end extendingthrough the guide 64 and initially coiled on the mandrel. LThe arm 62 supporting the reel and guide is ad justably positioned so that the paper strip 65 is fedto the mandrel at such angle that.

when the mandrel is rotated and moved fol,- wardly the stripwill become wound spiral- 1y upon the mandrel, with its edges abutting but not. overlapping each other. To effect continued evennessinfthe winding of the paper strip upon the mandrel it i's essential ward stroke may be varied as may of shall be at a velocity rate consistent withthat of the endwise travel of the mandrel and the width of the paper strip, as well as the angle at which the strip is fed to the mandrel. The relative rotary velocity of the mandrel, respecting its longitudinal forbe required by adjusting the belt shifter on the motion transmitting mechanism, while the angle at which the strip is fed to the-mandrel may be altered by adjusting the'arm 69..

The paper strip 72 which receives 'a coating of glue upon its under side in the appli cator in the usual manner is threaded through the guide 67 and initially wound upon the coils previously formed on the mandrel by the paper strip 65 so that the strip 72 overlaps the abutting edges of the" former strip. In similar fashion the paper I strip 73, which 'also receives a coating of glue on its under side in the applicator, is threaded through the guide 68 and initially wound upon the coils on the mandrel previously formed by the strip 72. During the forward stroke of the mandrel, the mandrel also rotates so that all of the paper strips are wound, in successive order, one superimposed upon the other forming a laminated tube 77 on the mandrel, which tube as it continues to be formed passes through the opening 52 in the gripping member and between the series of jaws thereof. At the conclusion of the forward winding stroke of the mandrel, the clutch members are moved out of locked engagement by the clutch actuating member and the switch H is closed so that the gripping member is a ctuated through the medium of the solenoid. Thus, the aws are brought into bearing engagement with the tube formed on the mandrel 'While the tube is thus held gripped between the jaws, the retracting stroke of the mandreltakes place and the paper tube- .thereon is withheld by the jaws from retracting with the mandrel. Upon the comletion of the retracting stroke the switch 4 isxreopened by the engagement with the fingen76, whereupon the gripping member isreleased and the jaws withdrawn from holding engagement with the tube. Upon each forward stroke of the mandrel the winding operation is resumed, the strips of paper passing to the mandrel at an acute angle therewith and being drawn forward and wound thereon by the progressive protrusion and rotation of the'mandrel, and upon each retracting stroke of the mandrel the tube is stripped endwise from the mandrel.

In this manner. the formation of the tube is continuous with the succession of for- ,rnandrel; The-tube thus made conforms to the cross sectional shape of the mandrel, which, in the foregoing example is square. However, round triangular. hexagonal or other shaped tubes, having cross sectional form other than square may be produced in similar fashion by substituting for the square mandrel as shown, a mandrel shaped accordiirgly.

The mandrel is made so as to be removable, replaceable, and the gripping device so as to be relatively adjustable. to the end that various shapes and sizes of tubes may be made on the same machine with little expenditure of time in making new settings.

I do not intend to limit myself to the precise form of mechanism herein shown but conceive as within the scope of my invention any apparatus readable upon the claims.

What I claim is:

I. In a paper tube making machine, a table; a reciprocating driver; a variable speed motion transmitting mechanism; a power means in connection with said reciprocating driver and transmitting mechanisin; a mandrel including supports therefor in which the mandrel is rotatively and longitudinally movable; a rotary driver having actuated relation with said traus niitting mechanism; a connecting rod having longitudinal sliding moven'ient in said rotary driver and being rotatively actuated thereby; a loose coupling connecting the driving rod and reciprocating driver; a clutch mechanism connecting the driving rod and mandrel through which rotary and longitudinal movement is imparted to the mandrel from the connecting rod during the forward stroke thereof, and longitudinal movementonly during the opposite stroke thereof; an actuating mechanism for disengaging from locked engagement the memhers of said clutch at the end of the forward stroke of the connecting rod; a gripping meml. :1 having a series of movable jaws and means for their operation, between which jaws said mandrel extends; automatic means for actuating said gripping member at the end of the forward stroke of said mandrel and sustaining the action of said member during the retracting stroke thereof; and adjnstably positioned means for supplying paper strips to said mandrel to be wound thereon in successive order, one upon another.

2. In a paper tube making machine, the combination with a supporting table, of a mandrel mounted to have rotary and longitudiual reciprocating moven'ient; a driving mechanism having rotary and longitudinal reciprocating movement; a variable speed mechanism in connection with said driving mechanism operable to alter the ratio between the rotary and reciprocating movements of said driving mechanism; a clutch :neearro mechanism connecting said driving mechamsm and mandrel operable to impart from said driving mechanism rotary and longitudinal movement to said mandrel during the forward stroke thereof, and longitudinal movement only during the opposite stroke thereof; an actuating mechanism for the clutch mechanism operable at the end of the forward strokeof said driving mechanism; a gripping member having movable jaws and means for'their operation, between which edges said mandrel extends; automatic means for actuating said gripping member at the end of the forward stroke of said mandrel and sustaining the action of said member during the retracting stroke thereof;- and means for supplying paper strips to said mandrel to be wound thereon, one upon another.

3. In a paper tube making machine including a supporting table, a mandrel having rotary and longitudinal reciprocating movement; adriving IIICClltlIllSIIl having connection with the mandrel and operable to rotate and move said mandrel longitudinally during. the forward stroke thereof and to impart longitudinal movement only to the mandrel during the opposite stroke thereof; means for supplying paper strips to the mandrel to be wound thereon by the turning and forward movement of the 1nandrel; and automatically controlled means for engaging said tube on the mandrel and operable to prevent the tube from retracting with the mandrel during the backward stroke thereof.

4. In a paper tube making machine ineluding a supporting table, a rotatable and longitudinally reciprocable mandrel; a drivmg mechanism operable to impart longitudinal and rotary movements simultaneously to said mandrel throughout its forward stroke and longltudmal movement only dur ing the retracting stroke thereof; means for supplying paper strips to the mandrel so that a tube is formed thereon by said strips during the turning and forward movement of the mandrel; and mechanism engageable with the tube on the mandrel and operable to prevent the tube from retracting with the mandrel.

5. In a paper tube making machine ineluding a mandrel and a paperstrip holding means for supplying paper strips for the formation of a tube on said mandrel; a

driving mechanism operable to impart longitudinal and rotary movements simultaneously to said mandrel throughout its forward stroke and longitudinal movement only during the retracting stroke thereof; and mechanism engageable with the tube on the mandrel and operable to prevent the tube from retracting with the mandrel.

(3. A paper tube making machine having a mandrel ineluding'a mount in which the "mandrel is rotatable and longitudinally reciprocable; a mechanism for imparting longitudinal and rotary movements simul-' tancously to the mandrel during the forward stroke thereof and longitudinal movement only during the retracting stroke thereof; means for supplying paper strips to said mandrel for the formation of a tube thereupon; and means to prevent retraction only respecting said axis during the retracting stroke thereof; means for Supplying paper strips to the mandrel so-that said strips become wound into the form of a tube surtraction of the tube with the mandrel.

8. In a paper tube making machine, a unitary mandrel having sliding support; a mechanism imparting tothe mandrel simultaneously rotary and longitudinal movementon its forward stroke and longitudinal movement only 0n its backward stroke; and means for supplying paper strips to said mandrel so that said strips become coiled upon said mandrel as the mandrel is actuated and a paper tube formed thereby.

9. In a paper tube making machine, a unitary mandrel movably supported; and a mechanism operable to impart to the man drel simultaneous rotary and longitudinal movement on its forward stroke and longitudinal movement only on its backward stroke, said mandrel being operable to wind thereon paper strips in coiled formation to form a tube.

- 10. In a paper tube making machine, a unitary'mandrel having simultaneous rotary and longitudinal.movement on its forward stroke and longiudinal movement only on its backward, stroke and being operable to wind thereon paper strips in coiled formation to form a tube thereon.

11. A machine for making paper tubes,

comprising a unitary mandrel, means for simultaneously rotating and protruding said mandrel while paper in strip form is being supplied to said mandrel so as to be wound spirally thereon to form a tube, means for arrestin the rotation and protrusion of said mandre means for retracting said mandrel after it has ceased rotating, and means for holding the tube while the mandrel is being retracted from Within it.

12. A machine for making paper tubes, comprising a unitary mandrel, means for simultaneously rotating and protruding said mandrel, means for holding paper inistrip form so that it may be supplied to said mandrel and wound spirally "thereon to form a tube as said mandrel is protruded, means for arresting the rotation of said mandrel when its protrusion is complete, means for retracting said mandrel after it has ceased rotating,

and gripping means to prevent the retraction of the paper tube with the mandrel.

13. A machine for making paper tubes, comprising a unitary mandrel, means for simultaneously rotating and protruding said mandrel, means Ior passing to said mandrel at an acute angle therewith paper in strip form to be drawn forward and wound thereon to forma tube, means for synchronously arresting the protrusion and rotation of said mandrel, means for gripping the tube formed on said mandrel so as to strip it therefrom upon the retraction of the mandrel, and means for retracting said mandrel.

14.11 machine for making paper tubes, comprising a'unitary mandrel, means for rotating said mandrel, means for protruding said mandrel at a constant rate while it is mandrel at an acute angle therewith paper in strip form to be drawn forward and wound thereon to form a tube while said mandrel 'is being rotated and protruded, means for simultaneousy arresting the rotation and protrusion'of said mandrel at the end of its" forward stroke, means for gripping the tube formed on said mandrel so as to strip it therefrom upon the retraction of the mandrel, means for retracting said mandrel, and means for co-ordinating the operation of all said before-mentioned means to ensure their functioning in repeated cycles automatically when the machine is once started and. the supplying of paper to the mandrel has begun.

15. In combination with a machine for making paper tubes, a unitary, reciprocating, intermittently-rotating mandrel, to

being rotated, means for passing to said which paper in strip form is supplied and I strips 1 In combination with a machine for making aper tubes, a unitary detachable, replaceab le, reciprocating, intermittently-. rotating andrel, to which pa er in strip form is supplied to be drawn orward and wound thereon to form a tube and means forholding said paper strips tobe supplied to said mandrel.

18. In combination with a machine for making paper tubes, a reciprocating, intermittently-rotating mandrel to which pa er in strip form is supplied and Wound spira ly thereon to form a tube, and means for gripping said tube so that upon the backward stroke the mandrel may be Withdrawn therefrom.

19. In combination with a machine for making paper tubes, a unitary, reciprocating, intermittently-rotating mandrel to which paper in strip form is supplied and wound spirally thereon to form a tube, and ineans for gripping said tube so that upon the back- .Ward stroke the mandrel may be Withdrawn reeeawo soas to strip it therefrom upon the retrac-- tion of the mandrel, and means for retracting said mandrel.

21. In Combination with a machine for making paper tubes, a unitary, reeiprooating, intermittently-rotating mandrel upon which the tube is formed, adjustable rollholders for the paper strips of which said tube is bein formed, means for varying the speed at which the mandrel is rotated in relation to its rate of protrusion so as' to supply the paper strips to the mandrel at the predetermined angle at which said rollholders are set.

The method of forming tubes from paper strips consisting of setting the stripholders so as to supply the paper strips at a predetermined angle to a rotating mandrel which is being protruded at a uniform rate, so supplying said paper, and ad'usting the speed of rotation of said man rel in relation to its rate of protrusion.

In testimony whereof I aflix my signature.

ROBERT J. JAUCH. 

